Improvement in anti-friction journal-bearings for hoisting-machines



A. dritt-1I' gitana ,Hi-etti sonnerie. HATFIELD, ornnWYoRK, N .Yg1

Letters Patent No. 98,260, dated December 28, 1869.

The Schedule referred to in these Letters Patent and making parl: of the same.

enable others skilled in the art to make and .use thel same, reference being had to the acci-)mpanying drawings, forming part ot' this speciticatiom l This invention relates to a. new and useful improvement in machines for raising weights and moving bod'- ies in any direction, and consist-s -in mechanism for diminishing friet-ionen the journal-bearings, as hereinafter more fully described.

In vthe accompanyingI drawings- Figure lis a side elevationof a. simple hoisting#- pulley, showing,r my anti-friction,mechanism appiiedto the jonrnal.-

Figure 2 is .a top or'planview of the same.

Similar letters o t'reterence indicate coi-responding parts. f

In this example of my invention, thev improvement is applied tothe journals ot' a single hoisting-pulley, but'this application is snticient to illustrate the inveution, and show its adaptability to various other lpurposes, andf'or jf'iurnal-beariugs generally.

A represents a supporting-traine.

B is the,hoisting-pulley C is the journal.

D is a double-track rail, or bed, which rests upon the fratrie A. Y y v E represents grooved rollers, two or more in number, whose journals, F, rest upon the track D,a.nd which traverse back and forth ou the track, as the rollers are revolved.

Gis a movable rail, which rests upon the'rollers E, and which forms the bearing for the journal C.

`Whenrnotion is impartedA to the pulley B, injthe" act ot' hoisting or moving a weight, the traction ofthe pulley-journals on the bearingfrails will more those f rails on the small rollers E, in Van'opposite direction. The journals` of those rollers atr the same time roll ou the track 1 so that'instead ot' any rubbing or frictional surfaces, we have rolling-surfaces throughout' the movement. For hoisting machines, elevators, dumb vvaiters,

windlasses, and derricks, for' moving windowsashesand shutters, doorsfandgates; for moving buildings 'and heavy weights or bodies, under nearly all circum-4 stances, the mechanism above described may be applied to the journal-bearings.

The journalsv pass through guide-stands H, which -servenierely to keep the journals in place.

I I represent stop-lugs on the. bearing-rail, for limitingits movement in either direction. The advantages of this invent-ion are, -the journal Vis prevented fromi heating or wearing, while the trici#v v tion is greatlyreduced,'and'lessvpoweris required to' rotate the wheelsor pulleys.

The expense ot' all oil o rother1nbricatiiig-material, and tlie.-t1'oubl,e and cost of applyingit, are entirely avoided, as the moving parts operate more perfectly uv'ithout,-than with lubrication.

v Having'th-us,described my invention, l I claim as'ne\i',.and desire to secure by Letters Patent- In combination with al journal, the track D, rollers E, andbearing-mil G, arranged and operating substantially as and for the purposes herein shown and described. v

R. G. HATFIELD.

Witnesses: Grao.` .W. MABEE,

ALEX. F. ROBERTS. 

